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Composite material for separating CH4 gas and preparation method thereof

A composite material and gas technology, applied in separation methods, gas fuel, gas treatment, etc., can solve the problems of cumbersome preparation methods, long preparation time, increased wear rate, etc., to solve the problem of reduced separation efficiency, increased gas adsorption capacity, and increased The effect of hydrothermal stability

Pending Publication Date: 2020-11-06
青岛创启汇能新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN102516435A discloses a method for preparing porous polymer by high internal phase emulsion polymerization, which is blocky and has a high wear rate during use; CN102731704A discloses a method for preparing porous polymer particles by miniemulsion template method, both of which are There are disadvantages such as long preparation time and cumbersome preparation methods, so it is not suitable for use as an engineered carrier material
[0006] Existing MOFs-polyHIPE composites have not been used in the field of gas separation. Since the prepared composites are mostly in the form of blocks, the wear rate in the cyclic test will be greatly increased
Moreover, the preparation process of the macroporous polymer carrier material and its composite process with MOFs are relatively complicated, and usually require long-term heating, resulting in high energy consumption in the preparation process.

Method used

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  • Composite material for separating CH4 gas and preparation method thereof
  • Composite material for separating CH4 gas and preparation method thereof
  • Composite material for separating CH4 gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028](1) Preparation of PGT. With acrylate as the main component, W / O emulsion was first synthesized. Oil phase (continuous phase) composition: TBMA 2.3g, GMA 0.7g, TMPTA 2g, emulsifier (PEG-PPG-PEG 5800) 0.5g, oxidant (benzoyl peroxide) 0.2g, toluene 6ml. Aqueous phase (dispersed phase) composition: deionized water 16ml. Stir the oil phase at a speed of 5000r / min for 5min, and at the same time add the water phase dropwise to the continuously stirring oil phase, and add 7 drops of reducing agent N,N-dimethylaniline during the process to prepare a uniform W / O lotion. At a speed of 230r / min, pour the prepared W / O emulsion into an aqueous solution containing 3wt.% polyethylene glycol (100ml, 70°C), and add 1ml of reducing agent tetramethylethylenediamine to form a redox Initiation system, quickly initiates the polymerization reaction of monomer and crosslinking agent, and obtains spherical polymer carrier (PGT).

[0029] (2) Preparation of precursor solution. AlCl 3 ·6H 2...

Embodiment 2

[0032] (1) Preparation of PGT. With acrylate as the main component, W / O emulsion was first synthesized. Oil phase (continuous phase) composition: TBMA 2.3g, GMA 0.7g, TMPTA 2g, emulsifier (PEG-PPG-PEG 5800) 0.5g, oxidant (benzoyl peroxide) 0.2g, toluene 6ml. Composition of the aqueous phase (dispersed phase): 16 ml of deionized water and 0.3 g of ammonium persulfate. Stir the oil phase at a speed of 5000r / min for 5min, and at the same time add the water phase dropwise to the continuously stirring oil phase, and add 7 drops of reducing agent N,N-dimethylaniline during the process to prepare a uniform W / O lotion. At a speed of 230r / min, pour the prepared W / O emulsion into an aqueous solution containing 3wt.% polyethylene glycol (100ml, 70°C), and add 1ml of reducing agent tetramethylethylenediamine to form a redox Initiation system, quickly initiates the polymerization reaction of monomer and crosslinking agent, and obtains spherical polymer carrier (PGT).

[0033] (2) Prepa...

Embodiment 3

[0036] (1) Preparation of PAM. With acrylamide as the main component, the O / W emulsion was first synthesized. Water phase (continuous phase) composition: AM3.2g, MBAM0.8g, F1270.4g, deionized water10g, initiator ammonium persulfate0.06g. Composition of the oil phase (dispersed phase): 18.44 g of toluene and 6.86 g of cyclohexane. The composition of the third phase: 30ml of toluene, 120ml of cyclohexane, 30ml of carbon tetrachloride, and 0.3g of EC. The water phase components were ultrasonically dissolved in deionized water, stirred at a high speed of 8000r / min for 5min, and the oil phase was added dropwise to the continuously stirred water phase to prepare a uniform O / W emulsion. At a speed of 320r / min, pour the prepared O / W emulsion into the third-phase solution (65°C) containing ethyl cellulose, and add 1ml of reducing agent TMEDA to form a redox initiating system to rapidly initiate monomer Polymerization reaction with cross-linking agent to obtain spherical polymer carr...

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Abstract

The invention discloses a composite material for separating CH4 gas, and belongs to the technical field of adsorption separation. The composite material reserves the gas adsorption separation capability of metal organic framework materials (MOFs) in performance. After the MOFs material is compounded with the porous polymer material polyacrylate microspheres (PGT) and polyacrylamide microspheres (PAM), the problems that the MOFs material is difficult to form and the separation efficiency is reduced after the MOFs material is formed are solved. Meanwhile, the material has better hydrothermal stability and wear resistance, is an efficient composite material for gas separation, and has important industrial value in the aspects of enrichment and utilization of methane in low-concentration coalbed methane and removal of nitrogen and carbon dioxide from natural gas.

Description

technical field [0001] The present invention relates to a method for separating CH 4 The gas composite material and its preparation method belong to the technical field of new materials. Background technique [0002] Fossil fuels are currently one of the main sources of energy, among which only carbon dioxide and water are produced when methane is burned, which is currently the cleanest fossil fuel with the lowest carbon emissions. Methane mainly comes from conventional natural gas and unconventional natural gas (mainly coalbed methane). Impurity gases such as nitrogen and carbon dioxide contained in natural gas will cause pipeline corrosion and lower calorific value. Therefore, the removal of impurity gases is very important for natural gas upgrading. The removal of gas impurities in natural gas involves 2 / CH 4 , CO 2 / CH 4 pairwise separation. However, coalbed methane contains a large amount of impurity gases mainly nitrogen, which is difficult to be directly used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02C10L3/10
CPCB01J20/226B01J20/28011B01D53/02C10L3/105C10L3/104B01D2257/102B01D2256/245B01D2257/504Y02C20/40
Inventor 密建国金君素吴浩王宇博甄崇礼
Owner 青岛创启汇能新材料科技有限公司
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